The polarity of the induced emf is such that it produces a current whose magnetic field opposes the change that produces it. The induced magnetic field inside any loop of wire always acts to keep the magnetic flux in the loop constant. This inherent behavior of generated magnetic fields is summarized in Lenz's Law.he polarity of the induced emf is such that it produces a current whose magnetic field opposes the change that produces it. The induced magnetic field inside any loop of wire always acts to keep the magnetic flux in the loop constant. This inherent behavior of generated magnetic fields is summarized in Lenz's Law.
When gross profit ratio is expressed in percentage form, it is known as gross profit margin or gross profit percentage. The basic components of the formula of gross profit ratio (GP ratio) are gross profit and net sales. Gross profit is equal to net sales minus cost of goods sold.
The debt-to-asset ratio is the ratio of total debt to total assets. The debt-to-equity ratio is the ratio of total debt to shareholders' equity, which is the difference between total assets and total liabilities. Profitability ratios indicate management's ability to convert sales dollars into profits and cash flow. The common ratios are gross margin, operating margin and net income margin. The gross margin is the ratio of gross profits to sales. The gross profit is equal to sales minus cost of goods sold.